What are the type of blocks used on Greendale Way?

A local resident has sent through this question:

I am a resident of the Carindale hills estate. I want to renovate my retaining wall and am having a problem identifying the type of blocks used on Greendale Way at the corner of Ridgeview St. Can you tell me the name of hte commercial retaining wall bricks used in htis spot?

Can anyone assist?

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